电视制式常用的有哪几种?
参考答案:
共有PAL制、NTSC制和SECAN制三种,我国采用的是PAL制。
Sometimes drivers give him a tip, so that he has just enough money to _____.
A.live by
B.live for
C.live on
D.live with
地方政府职能的(),产生于地方政府权力的双重来源.
A.差异性
B.局部性
C.双重性
D.服务性